Feeding device



Sept.'25, 1945. R. P. PLACE 2,385,643

l FEEDING DEVICE y Filed March so, 1944l Patented Sept. 25, 1945 FEEDINGDEVICE Roland P. Place, Midland, Mich., assignor to Ro- .land P. PlaceCo., a. corporation of Michigan Application March so, 1944, serial No.528,680 6 claims. (c1. 20s-.56)V

This invention relates to a feeding device and more particularly to animprovement in caps for rotary feeding devices of the lipstick type.

The ordinary lipstick container has a standardized rotary screw feed,advancement of the stick being accomplished by turning a sleeve withreference to the base of the container. It is also customary to providea cover or cap which frictionally engages the sides of the sleeve. Ithas been found that a large number of lipstick cartridges are spoiled bynervous or accidental twisting of the cover with reference to the basewhile the container is closed. As a result of this turning, the stick isforced against the cover and, being plastic, spreads and jams and spoilsthe assembly. The present invention provides a very simple method ofovercoming this difficulty. In its preferred form, jamming of thecartridge is avoided by providing a cam or beveled connection betweenthe cap and the base so that, on rotation of the cap, it is thrown outof frictional engagement with the sleeve and, therefore, is not able toadvance the cartridge.

The invention is illustrated in the drawing, in which Figure 1 is a sideelevation of a typical container; Figure 2 is a plan view thereof;Figure 3 is a sectional elevation along the line 3--3 in Figure 2;Figure 4 is a horizontal section along the line 4-4 in Figure 3,' andFigure 5 is a composite sectionalelevation of the three main operatingparts of the cartridge feed before assembly and arranged to show themethod of assembly.

The container I comprises a cap II and a cartridge I2 including a baseI3, a feed cylinder I4 having vertical slots I5, and a sleeve I6provided with spiral screw threads I1 and rotatably mounted in the baseI3. A carriage I8 having a pair of feed pins I9 is slidably mountedwithin the feed cylinder I4 with the pins I9 held within the slots I andthe threads I'I. A plastic stick such as a lipstick is mounted withinthe carriage and may be held therein in any suitable way as, forexample, by frictional engagement with a stud 2| The base I3 has anannular extension 22 forming a shoulder 23 against which the lower edge24 of the cap II abuts. The sleeve I6 is provided with a plurality oftapered portions 25 which provide a frictional engagement for the lowerportion of the cap II, as best shown in Figure 3. The cap has sufficientflexibility that it anchors itself firmly upon these tapers and is heldon the cartridge thereby. It will be noted, however, that the verticalarea within which frictional engagement occurs, is limited.

I have provided a beveled cam surface v3l) on the lower edge 24 of thecap and a corresponding beveled portion 3I on the shoulder 23 of thebase. These cam surfaces, on rotation of the cap with reference to thebase, move the cap to a position where it is out of frictionalengagement with the sleeve, and, therefore, cannot operate tofeed thelipstick.

The slope and depth of the cam surface is of course sufficient todisengage the cap from frictional engagement suiciently that, on turningthe cap,the feed cylinder will not be advanced. On the other hand, thebeveled portion may also be vertical to prevent relative rotation of capand base altogether until the cap has been withdrawn suiiiciently torelease it from frictional engagement. While the invention has beendescribed with reference primarily to lipsticks. it is also applicableto similar` plastic rotary cartridge feed devices suchas pomades, etcetera.

The foregoing detailed vdescription has been given for clearness ofunderstanding only, and no unnecessary limitations should be understoodtherefrom.

What I claim as new, Letters Patent, is:

l. In a lipstick container or the like having a rotary feed cartridgeincluding a base, a sleeve rotatably mounted on the base, and containinga cartridge fed by rotation of the sleeve with relation to the base,andhaving a cap in frictional engagement with the sleeve and abuttingthe base, and means common to the base and cap substantiallypreventing'relative rotary m0- tion of the cap and base` only while thecap is in frictional engagement with the sleeve.

2. A container as set forth in claim 1, in which the means forpreventing relative rotational movement of the base and cap duringfrictional engagement of the cap andsleeve include a beveled cam surfacesubstantially perpendicular to the axis of the sleeve and adapted uponrotation a small fraction of a turn to move the cap axially with respectto the sleeve out of frictional engagement therewith.

3. A container as set forth in claim 1, in which the cap is slidablymounted over the sleeve and the frictional engagement thereof with thesleeve is limited substantially to the closed position of the cap.

4. A feed device comprising a base having an annular extension, a screwthreaded sleeve rotatably mounted on the base, a vertically slotted feedcylinder within the sleeve and secured to the base, a carriage slidablymounted within the and desire to secure by Ytatably mountedon the feedcylinder, a pin carried by the carriage and extending through the slotinto the threading of the sleeve, and a cap having a lower edge abuttingthe annular extension of the base, the cap having a limited frictionalengagement with the sleeve when in contact with the base, the cap andthe annular extension of the base being shaped t to cause frictionaldisengagement of the sleeve and cap uponj limited -relative VrotationVof 'the cap and base through a small fraction of its cir` cumference. Y

5. A feed device comprising a ybase having any sleeve'andsecured to theabutting faces on the base having a limited frictional engagement withthe sleeve when in contact with the base, the lower edge of the cap andthe abutting portion of the base being sloped in a plane transverse tothe axis of the sleeveV so that upon rotation of the cap Withrrespect tothe base the sleeve will be thrown out of frictional engagement uponrotation through a small fraction of the circumference of the sleeve. fj' Y Y 6. A container as set forth in claim 1, in which the means commonto the base and cap include; and cap perpendicular to the axis of thesleeve and at aV sharp angle to the direction of rotation of the sleeve,whereby upon relative rotary motion of the cap and base through a smallfraction of the circumference having a lower edgeabut- L thereof thesleeve is forced out 'of rictional Vengagement with the cap.

Y l ROLAND P. PLACE.

